Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
050023goodexcellent51excellent
040024goodexcellent41excellent
030025goodexcellent41excellent
020023goodexcellent41excellent
010021goodexcellent41excellent
000019goodexcellent41excellent
230019goodexcellent41excellent
220019goodexcellent41excellent
210016goodexcellent31excellent
200013goodexcellent31excellent
190011excellentexcellent21excellent
18009excellentexcellent21excellent
17008excellentexcellent21excellent
160012excellentexcellent21excellent
150010excellentexcellent21excellent
140012excellentexcellent31excellent
130015goodexcellent41excellent
120023goodexcellent51excellent
110022goodexcellent61excellent
100024goodexcellent71excellent
090033goodexcellent71excellent
080031goodexcellent61excellent
070031goodexcellent61excellent
060034goodexcellent61excellent